Have you seen the “Christmas Star?” Step outside after dark on any clear night this month and look to the eastern sky. You’ll see a single, dazzling point of light rising into the night — so bright it outshines every star around it. Is it the legendary “Star of Bethlehem”? The explanation is simpler, more predictable and, in many ways, just as impressive — that brilliant “star” is the planet Jupiter, which is now reaching its biggest, brightest and best of the year.
Jupiter As The ‘Christmas Star’
The idea of a “Christmas Star” comes from the Gospel of Matthew, where it’s described a bright object rising in the east that leads the magi toward Bethlehem — a story written almost two millennia ago. Over the centuries since, many astronomical explanations have been suggested: a comet, a supernova or even a rare planetary conjunction of Jupiter and Venus. Yet stars and planets rise in the east every night because Earth rotates from west to east. What makes this month special is how bright Jupiter looks.
Jupiter Nears Its Opposition
In mid-December 2025, Jupiter is edging toward opposition, the moment when Earth slides between it and the sun. Opposition will come on January 10, 2026, but as that alignment approaches, we see Jupiter’s fully illuminated face — a “full” Jupiter, similar to how we see a full moon each month. Opposition also puts Jupiter at its closest point to Earth, which makes it exceptionally bright. At magnitude –2.2 and climbing, Jupiter dominates the night sky and is almost impossible to miss.
Jupiter comes to opposition every 13 months, rising in the east at or after sunset before it arcs high across the sky through the night to set in the west at or after sunrise. For several months around opposition, Jupiter becomes unchallenged at night — it’s the planet most likely to trigger the question, “What is that bright star?”
Why Jupiter Dominates December’s Night Sky
In late December, Jupiter rises in the early evening, climbing through Gemini and Taurus, with bright stars Castor, Pollux and Aldebaran nearby, and the Pleiades sparkling high above it. Nearby are the stars of Orion — it, the “Three Kings” or Orion’s Belt, reddish Betelgeuse, bluish Rigel and the hazy Orion Nebula. Jupiter is bright, but it shines next to some of the most beautiful stars and objects in the winter night sky. That’s why it’s so eye-catching.
Jupiter is destined to be routinely seen as the “Christmas Star” because its opposition occurs every 13 months, so it will reach peak visibility in December every 12 years.
How To See Jupiter At Its Best
You don’t need anything more than your naked eyes to see Jupiter — the light pollution makes almost zero difference. However, use a pair of 8×42 or 10×50 binoculars and the experience is transformed; the giant planet’s disk becomes obvious, so too its moons. Look carefully, and you’ll see up to four bright points around it — the Galilean moons, discovered by Italian astronomer Galileo Galilei in 1610. Any small telescope will reveal Jupiter’s cloud belts, while larger telescopes will show more structure, including the famous Great Red Spot.
Jupiter And The Search For Life
New research highlights how giant planets like Jupiter can shape — and sometimes limit — the potential for life in other star systems. A study published in The Astronomical Journal in late 2023 found that in some planetary systems, multiple Jupiter-sized worlds act like gravitational wrecking balls, destabilising the orbits of smaller Earth-like planets and ejecting them from the habitable zone (where liquid water can exist on the surface). In our own solar system, Jupiter protects Earth by deflecting comets and asteroids, but elsewhere, gas giants can be destructive, preventing rocky planets from becoming truly Earth-like.
Spacecraft On Their Way To Jupiter
Two major missions are now en route to Jupiter to replace NASA’s long-running Juno spacecraft. The European Space Agency’s JUICE mission, launched in 2023, will reach the Jovian system in 2031. It will conduct 21 close flybys of the cratered moon Callisto, photograph Europa, and eventually enter orbit around Ganymede for 18 months, becoming the first spacecraft to orbit a moon other than our own. Meanwhile, NASA’s faster-moving Europa Clipper — launched in 2024 — will arrive in 2030 to make dozens of flybys of Europa, searching for clues about its subterranean ocean.
Wishing you clear skies and wide eyes.
